From 37db1d1ca7f612d061dd82205520ad6f437fb66a Mon Sep 17 00:00:00 2001
From: bluhm <bluhm@openbsd.org>
Date: Thu, 2 Sep 2021 19:38:20 +0000
Subject: [PATCH] Do not create loopback interfaces lo1, lo2, ...  upfront. 
 They are automatically set up by the kernel when a routing domain is created.
 An existing lo1 in rdomain 0 would prevent to add any interfaces in rdomain
 1. OK kn@

---
 etc/netstart | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/etc/netstart b/etc/netstart
index b937a70712e..b36b34024fc 100644
--- a/etc/netstart
+++ b/etc/netstart
@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: netstart,v 1.215 2021/08/30 16:58:52 bluhm Exp $
+#	$OpenBSD: netstart,v 1.216 2021/09/02 19:38:20 bluhm Exp $
 
 # Turn off Strict Bourne shell mode.
 set +o sh
@@ -103,6 +103,9 @@ vifscreate() {
 			[[ -f $_hn ]] || continue
 			_if=${_hn#/etc/hostname.}
 
+			# loopback for routing domain is created by kernel
+			[[ -n ${_if##lo[1-9]*} ]] || continue
+
 			if ! ifcreate $_if; then
 				print -u2 "${0##*/}: create for '$_if' failed."
 			fi
-- 
2.20.1